US11542751B2 - Multi-function drilling tool - Google Patents
Multi-function drilling tool Download PDFInfo
- Publication number
- US11542751B2 US11542751B2 US17/239,095 US202117239095A US11542751B2 US 11542751 B2 US11542751 B2 US 11542751B2 US 202117239095 A US202117239095 A US 202117239095A US 11542751 B2 US11542751 B2 US 11542751B2
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- US
- United States
- Prior art keywords
- drilling tool
- holes
- end cover
- housing
- pendulum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 62
- 239000012530 fluid Substances 0.000 claims abstract description 44
- 238000004891 communication Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000003208 petroleum Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
Definitions
- the present invention belongs to the technical field of petroleum drilling, and it relates to a multi-function drilling tool.
- the existing downhole striking tools are basically a single axial hammer or a single torsional hammer, and their use is effects are general.
- the purpose of this invention is to provide a drilling tool that can simultaneously generate the axial and torsional striking forces to increase the rate of penetration (ROP) and reduce the stick-slip phenomenon.
- a drilling tool comprising: an axial striking part, a torsional striking part and an auxiliary part; the two ends of the drilling tool are detachably threads connected with the upper drilling tool and the drill bit, respectively.
- the axial striking part comprises a hammer that is located inside the upper housing and generates a striking force, a center tube and an intermediate tube that control the movement and reverse the direction of the hammer, a fixing block inserted into the upper end of the intermediate tube, an adjustment screw assembled on the upper housing and a spring between the fixing block and the hammer; the hammer of the axial striking part reciprocally strikes the upper housing to generate an axial striking force up and down.
- the torsional striking part comprises a pendulum that is mounted inside the lower housing and generates a torsional striking force to strike the lower housing, a reversing switch for turning direction of the pendulum, an upper end cover and a lower end cover assembled respectively on the upper and lower ends of the pendulum.
- the auxiliary part comprises an upper connector coupled to the upper drilling tool, an upper connector connected with the drill bit, and a nozzle is that generates a variable pressure cavity.
- the inside and outside of the hammer are in clearance fit with the intermediate tube and the upper housing, respectively; the hammer is coaxial with both the intermediate tube and the upper housing.
- the center tube is configured with the holes a, the holes b, and the holes c; the center tube is coaxial with the intermediate tube designed with the holes d and the holes e.
- the couple holes a, the couple holes b, the couple holes d and the couple holes e are symmetrically configured, respectively.
- the axis of the holes a are parallel to the holes b.
- the four holes c are evenly distributed; and a certain phase difference is between the axis of the holes d and the axis of the holes e.
- the inside of the fixing block is inserted into the intermediate tube, the outside of the fixing block is a gear structure.
- the adjustment screw assembled on the upper housing limits the circumferential direction of the fixing block, and the upper connector limits the axial direction of the fixing block.
- the two ends of the spring implemented pre-pressure by the upper connector are against the fixing block and the hammer, respectively.
- the reversing switch is connected with the connection point of the center tube; and the center tube rotates to change direction with the reversing switch together when the reversing switch works.
- Both the center tube and the inside of the lower end cover are configured with nozzles, and the shoulders of the center tube and the shoulders of the lower end cover and the retainer ring limit the nozzles axially.
- the lower end cover is fixed in the inside of the lower housing by the end cover screws.
- the reversing switch is designed with a couple of symmetrical flow channels a.
- the reversing switch above the upper end cover is configured with two-layer holes f, and each layer has four holes f evenly distributed.
- the pendulum is configured with a couple of symmetrical fluid channels e, a couple of symmetrical fluid channels f, a couple of symmetrical fluid channels g and a couple of symmetrical fluid channels h; the inside of the lower housing has a fluid channels b and a fluid channels c.
- the lower end cover has a couple symmetric fluid channels j and a couple symmetric fluid channels k.
- the front end and the rear end of the reversing switch are configured with the grooves suitable for balls c, respectively.
- the upper end and the lower end of the pendulum are configured with the arc grooves equipped with the balls b at a lower end of the upper end cover and the balls c at an upper end of the lower end cover, respectively.
- the pendulum comprises the inside and the outside coupled to the reversing switch and the lower housing, respectively, which is coaxial with the reversing switch and the lower housing both.
- the upper end cover blocks the upper end of the flow channel c, and the lower end of the flow channel c is in communication with the flow channel j; the lower end cover blocks both the lower end of the flow channel b and the flow channel d.
- the outer walls of the upper connector, the upper housing, the lower housing and lower connector are configured with the spiral grooves, respectively.
- the upper connector is connected with the upper housing mounted with the lower housing coupled with the lower connector used threads together by threads.
- the invention may have the following beneficial effects: it is a purely mechanical structure and not liable to fail in a complex and changeable downhole environment. It uses drilling fluid to generate axial and torsional is striking forces at the same time, effectively increasing the ROP and reducing the stick-slip phenomenon of the drill string system.
- FIG. 1 is a schematic diagram of the drilling tool according to an embodiment of the present invention.
- FIG. 2 is an A-A cross-sectional view of FIG. 1 , which is about the external gear structure 31 on the fixing block 3 restricting the circumferential movement by the adjustment screw 21 ;
- FIG. 3 is a B-B cross-sectional view of FIG. 1 , which is about the axial holes a 51 of the center tube 5 and the axial holes d 71 of the intermediate tube 7 ;
- FIG. 4 is a C-C cross-sectional view of FIG. 1 , which is about the axial holes b 52 of the center tube 5 and the axial holes e 72 of the intermediate tube 7 ;
- FIG. 5 is a D-D cross-sectional view of FIG. 1 , which is with regard to the four pressure relief holes c 53 uniformly distributed in the center tube 5 ;
- FIG. 6 is an E-E cross-sectional view of FIG. 1 , which is about the center tube 5 being plugged into the reversing switch 11 ;
- FIG. 7 is a F-F cross-sectional view of FIG. 1 , which is with respect to the upper end cover 12 ;
- FIG. 8 is a G-G cross-sectional view of FIG. 1 , which is about the torsional striking part;
- FIG. 9 is a H-H cross-sectional view of FIG. 1 .
- FIG. 1 discloses schematically a drilling tool according to an embodiment of the invention. It should be illustrated that the drawings of the present invention are applied to the oil drilling industry, and it does not limit current application to this.
- the axial striking part of the drilling tool comprises a hammer 6 located in the inside of the upper housing 9 to generates an axial striking force, a center tube 5 and an intermediate tube 7 that move and reverse the direction of the hammer 6 , the fixing block 3 inserted into the upper end of the intermediate tube 7 , a spring 4 between the fixing block 3 and the hammer 6 , and an adjustment screw 21 assembled on the upper housing 9 .
- the hammer 6 strikes the upper housing 9 up and down to generate an axial striking force, reciprocally.
- the torsional striking part comprises a pendulum 15 that is located the inside of the lower housing 14 and generates a striking force, a reversing switch 11 for changing the direction of the pendulum 15 , an upper end cover 12 and a lower end cover 19 assembled on the upper and lower ends of the pendulum 15 , respectively.
- the pendulum 15 of the torsional striking part produces a torsional striking force to strike the lower housing 14 , torsionally and reciprocally.
- the auxiliary part comprises an upper connector 1 connected with the upper drilling tool, an upper connector 20 coupled to a drill bit, and a nozzle 18 to produce a pressure drop.
- the inner and outer parts of the hammer 6 are in clearance fit with the intermediate tube 7 and the upper housing 9 respectively; the hammer 6 is coaxial with the intermediate tube 7 ; the hammer 6 is coaxial with the upper housing 9 , and the hammer 6 is sleeved on the intermediate tube 7 and can slide in the axial direction.
- the center tube 5 configured with the holes a 51 , b 52 and c 53 is coaxial with the intermediate tube 7 designed with the holes d 71 and e 72 e .
- a couple of holes a 51 , holes b 52 , holes d 71 and holes e 72 are symmetrically configured, respectively.
- the axis of the holes a 51 is paralleled with the holes b 52 ; the four holes c 53 are evenly distributed; a certain phase difference is at between the axis of the holes d 71 and the axis of the holes e 72 .
- the intermediate tube 7 restricts the rotation under the action of the fixing block 3 and the adjustment screw 21 during the center tube 5 rotation, and the high-pressure drilling fluid alternately enters the upper and lower ends of the hammer 6 to push the hammer 6 reciprocated axially to achieve axial striking force.
- FIGS. 1 and 2 discloses the fixing block 3 which includes the inside inserted into the intermediate tube 7 and the outside being a gear structure 31 .
- the circumferential direction of the fixing block 3 is limited by an adjustment screw 21 assembled on the upper housing 9 associated with the lower housing 14 by threads.
- the gear structure 31 and the adjustment screw 21 are used to adjust the appropriate circumferential position of the intermediate tube 7 .
- the two ends of the spring 5 implemented pre-pressure by the upper connector 1 support the fixing block 3 and the hammer 6 , respectively.
- the spring 5 acts as a buffer when the hammer 6 moves upward in the axial direction to avoid striking force opposite to the drilling direction or when the hammer 6 moves downward in the axial direction to generate the additional thrust.
- the reversing switch 11 rotates to change direction with the center tube 5 together during the reversing switch 11 operates.
- the center tube 5 reverses the axial striking force while the reversing switch 11 reverses the torsional striking force
- the nozzle 18 located between the center tube 5 and the lower end cover 19 is axially restricted by the shoulders of the center tube 5 and the shoulders of the lower end cover 19 and the spring retainer ring 17 .
- Drilling fluid generates the pressure drop to push the hammer 6 and the pendulum 15 to move during the drilling fluid flow through the nozzle 18 .
- the lower end cover 19 is fixed in the inside of the lower housing 14 by the end cover screw 22 .
- FIG. 1 to FIG. 8 disclose the reversing switch 11 configured with a couple of symmetrical flow channels a 112 .
- the reversing switch 11 above the upper end cover 12 is configured with two-layer holes f 111 , and each is layer has four holes f 111 evenly distributed.
- the pendulum 15 is designed with a couple of symmetrical fluid channels e 151 , a couple of symmetrical fluid channels f 152 , a couple of symmetrical fluid channels g 153 and a couple of symmetrical fluid channels h 154 ; the inside of the lower housing 14 has a fluid channel b 141 and a fluid channel c 142 ; the lower end cover 19 has a couple of symmetric fluid channels j 191 and a couple of symmetric fluid channels k 192 .
- FIG. 1 discloses the front end and the rear end of the reversing switch 11 configured with the grooves suitable for balls 16 , respectively; the upper end and the lower end of the pendulum 15 are configured with the arc grooves equipped with the balls 13 at a lower end of the upper end cover 12 and the balls 16 at an upper end of the lower end cover 19 , respectively.
- the ball 13 and the ball 16 are used to reduce friction during the reversing switch 11 and the pendulum 15 rotation operation.
- the pendulum 15 comprises the inside and outside coupled to the reversing switch 11 and the lower housing 14 in clearance fit, respectively, which is coaxial with the reversing switch 11 and the lower housing 14 ; the upper end cover 12 blocks the upper end of the flow channel c 142 , and the lower end of the flow channel c 142 is coupled to the flow channel j 191 ; the lower end covers 19 blocks both the lower ends of the flow channels b 141 and the flow channels d 143 .
- the outer walls of the upper connector 1 , the upper housing 9 , the lower housing 14 and lower connector 20 are all configured with the spiral grooves, respectively; the upper connector 1 and the upper housing 9 , the upper housing 9 and the lower housing 14 , and the lower housing 14 and the lower connector 20 are is connected together by threads.
- FIG. 2 is a schematic sectional view of the external gear structure 31 on the fixing block 3 restricting the circumferential movement by the adjustment screw 21 ;
- FIG. 3 is sectional schematic diagrams of the axial holes a 51 , d 71 about the center tube 5 and the intermediate tube 7
- FIG. 4 is sectional schematic diagrams of the axial holes b 52 , e 72 about the center tube 5 and the intermediate tube 7 , respectively;
- FIG. 5 is a schematic diagram of the four pressure relief holes c 53 uniformly distributed in the center tube 5 ;
- FIG. 6 is a schematic diagram of the center tube 5 being plugged into the reversing switch 11 ;
- FIG. 7 is a schematic sectional view of the upper end cover 12 ;
- FIG. 8 is a schematic sectional view of the torsional striking part;
- FIG. 9 is a schematic sectional view of the lower end cover 19 .
- the torsional striking process of the drilling tool is as following: the upper connector 1 is connected to the drill string.
- the high-pressure drilling fluid is injected through the drill string.
- the high-pressure drilling fluid sequentially flows through the hole f 111 of the reversing switch 11 , the flow channel b 141 of the lower housing 14 , and the flow channel h 154 of the pendulum 15 , which enters the cavity a 1115 a and pushes the reversing switch 11 to rotate clockwise.
- the low-pressure drilling fluid in the cavity b 1115 b flows back to the upper connector 20 through the flow channel g 153 of the pendulum 15 , the flow channel c 142 of the lower housing 14 , and the flow channel j 191 of the lower end cover 19 in turn.
- the flow channel a 112 of the reversing switch 11 communicates with the flow channel f 152 of the pendulum 15 when the reversing switch 11 rotates clockwise to the limit, and the high-pressure is drilling fluid enters the cavity d 1415 a to rotate the pendulum 15 counterclockwise.
- the pendulum 15 drives the reversing switch 11 to rotate counterclockwise together; at the same time, the low-pressure drilling fluid in the cavity e 1415 b flows back to the upper connector 20 through the flow channel e 151 of the pendulum 15 , the cavity c 1115 c , and the flow channel k 192 of the lower end cover 19 in turn.
- the pendulum 15 When the pendulum 15 strikes the lower casing 14 counterclockwise, the high-pressure drilling fluid in the flow channel d 143 enters the cavity b 1115 b through the flow channel g 153 to rotate the reversing switch 11 counterclockwise, the high-pressure drilling fluid enters the cavity e 1415 b to the pendulum 15 rotate counterclockwise when the flow channel a 112 is connected to the flow channel e 151 .
- the pendulum 15 drives the reversing switch 11 until the pendulum 15 impacts the lower housing 14 clockwise.
- the pendulum 15 reciprocates, generating the torsional impact.
- the axial impact process of the drilling tool is as following: the upper connector 1 is connected to the drill string.
- the high-pressure drilling fluid is injected through the drill string.
- the holes a 51 and d 71 are being low-pressure during the pendulum 15 drives the reversing switch 11 to rotate counterclockwise together resulting in the center tube 5 to rotate counterclockwise.
- the low-pressure drilling fluid at the upper end of the hammer 6 is enters the annulus low-pressure zone between the center tube 5 and the intermediate tube 7 through hole d 71 .
- the high-pressure drilling fluid enters the lower end of the hammer 6 through holes b 52 and hole e 72 to push hammer 6 compressing spring 4 upward in the axial direction when hole b 52 is in communication with holes e 72 .
- the hole a 51 is connected to the hole d 71 as the pendulum 15 drives the reversing is switch 11 to rotate clockwise together so that the center tube 5 rotates clockwise, and the high-pressure drilling fluid enters the upper end of the hammer 6 through the holes a 51 and d 71 , and together with the spring 4 , push the hammer 6 down in the axial direction and impact the upper housing 9 .
- the low-pressure drilling fluid at the lower end of the hammer 6 communicates with the annulus low pressure zone between the center tube 5 and the intermediate tube 7 through the hole e 72 when the holes b 52 and the holes e 72 are closed.
- the hammer 6 reciprocates in line to produce the axial striking force in this way.
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims (14)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011454304.7 | 2020-12-10 | ||
CN202011454304.7A CN112392399B (en) | 2020-12-10 | 2020-12-10 | Composite impactor |
Publications (2)
Publication Number | Publication Date |
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US20220186560A1 US20220186560A1 (en) | 2022-06-16 |
US11542751B2 true US11542751B2 (en) | 2023-01-03 |
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Application Number | Title | Priority Date | Filing Date |
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US17/239,095 Active 2041-09-04 US11542751B2 (en) | 2020-12-10 | 2021-04-23 | Multi-function drilling tool |
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US (1) | US11542751B2 (en) |
CN (1) | CN112392399B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112901063B (en) * | 2021-02-24 | 2022-09-06 | 重庆科技学院 | Injection-suction type drilling speed-increasing tool |
CN115405222A (en) * | 2022-08-12 | 2022-11-29 | 西南石油大学 | High-frequency composite impactor |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2911192A (en) * | 1957-04-03 | 1959-11-03 | Jersey Prod Res Co | Vibratory rotary drilling method and apparatus |
US3145787A (en) * | 1961-12-21 | 1964-08-25 | Jersey Prod Res Co | Rotary and input drilling apparatus |
US3811515A (en) * | 1973-01-15 | 1974-05-21 | A Bazhal | Percussive drilling machine |
US20030062176A1 (en) * | 2001-09-29 | 2003-04-03 | Beccu Rainer Sebastiano | Percussive rotational impact hammer |
US20050241842A1 (en) * | 2004-04-29 | 2005-11-03 | Brent Marsh | Reciprocable impact hammer |
US20100288521A1 (en) * | 2008-01-07 | 2010-11-18 | Suk Shin In | Vibration hammer |
US20110120725A1 (en) * | 2008-06-13 | 2011-05-26 | Downton Geoffrey C | Wellbore instruments using magnetic motion converters |
US20180171717A1 (en) * | 2015-10-01 | 2018-06-21 | Cnpc Xibu Drilling Engineering Company Limited | Torsion impact speed acceleration device |
US20210140239A1 (en) * | 2019-11-08 | 2021-05-13 | XR Dynamics, LLC | Dynamic drilling systems and methods |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1102928A1 (en) * | 1983-04-27 | 1984-07-15 | Карагандинский Ордена Трудового Красного Знамени Политехнический Институт | Hydraulic percussion mechanism |
CN202611652U (en) * | 2012-04-27 | 2012-12-19 | 宝鸡石油机械有限责任公司 | Electro-hydraulic composite penetrating device for underwater horizontal Christmas tree system |
CN102747958B (en) * | 2012-07-23 | 2015-01-07 | 中国石油大学(华东) | Compound vibrating well-drilling tool |
CN103291214B (en) * | 2013-06-19 | 2016-03-30 | 中国石油大学(华东) | Be applicable to the reciprocating hydraulic impacter of hard formation drilling well |
CN103953281B (en) * | 2014-05-06 | 2016-01-13 | 北京信息科技大学 | composite impact drilling tool |
CN104912478B (en) * | 2015-04-23 | 2017-09-05 | 中海油研究总院 | Drilling well percussion mechanism |
CN206368686U (en) * | 2016-12-05 | 2017-08-01 | 江苏航天鸿鹏数控机械有限公司 | Drill bit radial direction bumper jar |
CN106837178B (en) * | 2017-01-19 | 2019-10-11 | 倪建挺 | A kind of efficient three-dimensional impact drilling speed device |
CN107642327B (en) * | 2017-10-30 | 2023-09-15 | 吉林大学 | Closed positive and negative circulation impactor |
CN109667536B (en) * | 2019-01-24 | 2020-04-17 | 西南石油大学 | High-frequency torsional vibration viscosity reduction tool |
CN109915012B (en) * | 2019-04-23 | 2020-11-24 | 西南石油大学 | Hydraulic longitudinal-torsional coupling impactor |
-
2020
- 2020-12-10 CN CN202011454304.7A patent/CN112392399B/en active Active
-
2021
- 2021-04-23 US US17/239,095 patent/US11542751B2/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2911192A (en) * | 1957-04-03 | 1959-11-03 | Jersey Prod Res Co | Vibratory rotary drilling method and apparatus |
US3145787A (en) * | 1961-12-21 | 1964-08-25 | Jersey Prod Res Co | Rotary and input drilling apparatus |
US3811515A (en) * | 1973-01-15 | 1974-05-21 | A Bazhal | Percussive drilling machine |
US20030062176A1 (en) * | 2001-09-29 | 2003-04-03 | Beccu Rainer Sebastiano | Percussive rotational impact hammer |
US20050241842A1 (en) * | 2004-04-29 | 2005-11-03 | Brent Marsh | Reciprocable impact hammer |
US20100288521A1 (en) * | 2008-01-07 | 2010-11-18 | Suk Shin In | Vibration hammer |
US20110120725A1 (en) * | 2008-06-13 | 2011-05-26 | Downton Geoffrey C | Wellbore instruments using magnetic motion converters |
US20180171717A1 (en) * | 2015-10-01 | 2018-06-21 | Cnpc Xibu Drilling Engineering Company Limited | Torsion impact speed acceleration device |
US20210140239A1 (en) * | 2019-11-08 | 2021-05-13 | XR Dynamics, LLC | Dynamic drilling systems and methods |
Also Published As
Publication number | Publication date |
---|---|
CN112392399A (en) | 2021-02-23 |
CN112392399B (en) | 2022-03-25 |
US20220186560A1 (en) | 2022-06-16 |
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